Although I disagree with the American foreign policy proceeding the Korean War(i.e. Vietnam, Iraq) the US did play a crucial role in preventing a further holocaust in WW2 and also keeping the people of South Korea free. Many great men have committed the ultimate sacrifice for something they believe in. For you to say the vast majority died for oil or conquest is entirely inaccurate. I would also argue that patriotism and nationalism is a rebellion against oligarchy. The true oligarchy is the United Nations, the Counsel on Foreign Relations, the international monetary fund, Bilderberg etc.....They want a one world government which people that post things against things such as nationalism seem to support.